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-rw-r--r--stream/tvi_v4l2.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/stream/tvi_v4l2.c b/stream/tvi_v4l2.c
index fc23727f9f..7a15a9b0be 100644
--- a/stream/tvi_v4l2.c
+++ b/stream/tvi_v4l2.c
@@ -35,6 +35,7 @@ known issues:
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
+#include <math.h>
#ifdef HAVE_SYS_SYSINFO_H
#include <sys/sysinfo.h>
#endif